ES2202365T3 - HOUSING WITH DISPOSABLE LIQUID PERFUSION PUMPING CAMERA EQUIPPED WITH A FLUID SWITCH WITH PUSH BUTTON. - Google Patents

Abstract

A disposable pumping cassette having an integral auxiliary flow control and pressure monitoring member is used for delivering a medicinal fluid to a patient. The pumping cassette includes an elastomeric member mounted in a rigid body having an inlet and an outlet. An inlet valve and an outlet valve on the cassette are opened, and the flow control is positioned to allow the medicinal fluid to flow freely through the cassette, priming it before the outlet is connected to the patient. The cassette is then coupled to an associated pump driver, closing the flow control to disable free fluid flow through the cassette, and the outlet of the cassette is coupled in fluid communication with the patient's body. The medicinal fluid is drawn into a pumping chamber formed in the rigid body as a plunger of the associated pump driver is drawn up from the elastomeric membrane at a recess formed in the rigid body. The plunger is then advanced downwardly, forcing the elastomeric membrane into the pumping chamber to deliver the medicinal fluid to the patient. The pressure of the fluid delivered to the patient is monitored through contact of the auxiliary flow control member with the elastomeric membrane over an outlet channel of the cassette.

Description

Housing with perfusion pump chamber disposable liquid equipped with a fluid switch with button button.

In recent years, there has been a use increased fluid infusion pumping devices of positive displacement for fluid supply so intravenous or intra-arterial to a patient. Plus frequently, such devices are used in hospitals or other places of patient care. Such devices have replaced, to a high degree, the flow control systems of industrious gravity, mainly due to its accuracy a lot greater than delivery rates and doses, sophistication relative is to allow a flexible and controlled feeding from from multiple sources of liquid, and in particular, its ability to accurately control the amount of potent drugs provided to a patient for a given period of time.

A typical infusion pump system of positive displacement includes a pump actuator device and a disposable housing. The disposable housing, which is adapted for use with only one patient and for a cycle of fluid supply, is typically a small plastic unit which has an input and an output connected respectively to through the flexible tubing to the fluid supply container and the patient receiving the infusion. The housing includes a camera pumping, the flow of fluid through the chamber being controlled by a piston or piston activated in a manner controlled by the actuator device

For example, the housing chamber may have a wall formed by a flexible diaphragm that is in motion alternative by the plunger and the actuator to cause the flow to flow fluid. The pump actuator includes the piston or piston to control the flow of fluid in and out of the chamber pumping in the housing, and also includes control mechanisms to ensure that the fluid is supplied to the patient at a preset speed by default, and only for a particular preselected time or total dose. The pump actuator device may also include the pressure detection and other flow monitoring devices of fluid, as well as valve members to open and close the several steps in the housing, including the entry and exit steps of the pumping chamber.

The housing of the disposable pumping chamber of The prior art can be manufactured easily and little expensive in three pieces. The size of the technique housing previous allows the incorporation of a multiplicity of functions of control and supervision. The prior art housing includes, For example, pressure monitoring, detection monitoring air bubbles, adaptation to multiple inputs, and supervision of leak detection, all functions can be performed without Modify the basic structure of the housing.

However, the adaptation of all functions of control and supervision described above on the housing complicates the prior art housing with respect to the ease of manufacture, functional use and size. In a system of Infusion pumping that is not dedicated to hospital use, but which instead is intended for domestic use by the patient or it is intended to be transported by the patient in an apparatus of traveling infusion, it is desirable to simplify the housing not only in size but also in function and in the form of drive so that a common user can easily use the housing of the pump on a daily basis, in repeated circumstances, and achieve daily or more frequent installation and use without incidents In addition, there are more and more mobile applications in the hospital that require simplicity and ease of operation of a housing designed for attention use in House.

A pump housing according to the part of Pre-characterization of claim 1 is known from the document EP-A-0 293 592.

Papers DE-AS-2 142 702 and US-A-4 411 603 describe pumping devices for medical use including valves one way retention.

The document US-A-3 416 461 refers to a diaphragm pump that includes a flange diaphragm rod peripherals to minimize the possibility of leakage.

The document FR-A-2 352 996 describes a pump intravenous infusion with nearby pressure monitoring chambers and distant respective.

Although the pumping chamber housing of Infusion of disposable fluid of the present invention has its origin in the prior art housing, the present housing is simpler in structure and operation and presents a profile of substantially smaller housing, establishes such functions of control and supervision as bubble detection supervision of air and leak detection monitoring outside the housing to further simplify and contract the size of the housing, and provides a flow interrupt button to control additionally the fluid supply through the housing of the present invention, as defined in the attached claims.

A better understanding of the present invention for consideration of the detailed description of the invention, particularly when considering a description of this type in conjunction with the following drawings.

Detailed description of the drawings

Figure 1 is a perspective view of the Enhanced pumping chamber housing of the present invention.

Figure 2 is a perspective view exploded, neat, from the housing of figure 1.

Figures 3a and 3b show an elevation view exploded in order of the housing of figure 1.

Figure 3A is a view taken along lines 3A-3A of figure 3.

Figure 4A is a top plan view of the flow cap of the improved housing of the present invention.

Figure 4B is a top plan view of the improved housing cover of the present invention.

Figure 4C is a plan view of the diaphragm. Elastomeric of the improved housing of the present invention.

Figure 4D is a top plan view of the base member of the improved housing of the present invention.

Figure 5 is an elevation view of the housing Enhanced of the present invention with the housing flow stop arranged in an open position.

Figure 6 is an elevation view similar to the view of figure 5, where the flow stop is in a position coupled; Y

Figure 7 is a schematic drawing of a pump and a pump actuator with the improved housing of the present invention arranged adjacent to this for insertion into the pump.

For the best understanding, the member The elastomer is rotated 180º and its butterfly valves are shown looking towards the face member, although the butterfly valves they are facing, in the real embodiments, towards the base member

Detailed description of the preferred embodiment

A pumping housing 10 of the present invention It is illustrated in Figures 1-6. The housing 10 includes a rigid face member 12 and a rigid rear member 14 with an elastomeric member 16 placed in the middle. Face member 12 has a plunger opening 18 with the elastomeric member 16 that extends through the opening. Behind the opening of the plunger 18, in the rear member 14, in an elongated recess 20 which forms the bottom fluid container of a pumping chamber 22

A flow stop 24 comprising a housing of rocker switch 25 is mounted on face member 12. The switch housing 25 is mounted on a shaft 26 which is projects from opposite sides of switch housing 24 e additionally includes at its upper end an actuator of concave switch 27 and a convex switch actuator 28.

A leg 29 extends below the actuator of concave switch 27. A stop 29a is disposed at one end lower leg 29 of the concave switch actuator 27. A crown member 30 having an upper end 30a and an end lower 30b is disposed at a lower outer end of the convex switch actuator 28 at its intermediate point.

The face member 23 is a fit body generally rectangular 31 which has opposite side walls 32a, 32b and the end walls 34a and 34b. Each junction point of a side wall 32a, 32b with a respective end wall 34a, 34b, is rounded, as best shown in the plan view of Figure 4B. The face member 12 is approximately 4.3 centimeters ("cm") long and 1.8 cm wide. A section open 35, at the distant end of the face member 12, is almost square, being slightly longer, at approximately 2.1 cm, than its width The far end wall 34b, adjacent to the open section 35 is approximately 1.1 cm high, approximately twice the height of the next extreme wall 34a (0.55 cm). The side walls 32a, 32b are as tall as the distant end wall 34b at the junction point between them, but it staggered down to the near extreme wall level 34a in two stages 36 and 37. The first stage 36 is approximately in the midpoint of the open section 35, and the second stage 37 is in an inner end 35a of the open section. The upper face 38 which is at the height of the next extreme wall 34a, is essentially closed from elevator 37a of second stage 37 to the near extreme wall.

Open section 35 includes inner tabs opposite 39 that extend from the upper face 37b of the second stage 37 at its opposite ends along the walls sides 32a, 32b to terminate at the far end wall 34b on its inner side. The upper face 37b also includes a semicircular cut 40 in its middle portion, the cut 40 centered generally along the longitudinal axis of face member 12, with an open face of the cut 40 that opens in section 35.

The openings 41 further defined by sets of rails or guides 42 extending downward provided at the opposite peripheral edges of each opening 39 and integrally molded into the side walls 32a, 32b, they are provided in opposite inner tabs 39 generally in their respective middle portions. Each lane or guide of each rail or guide assembly 42 ends at a lower end in a retainer 42a.

The upper face 38 of the face member 12 is extends from the bottom of the second stage 37 to the near end wall 34 to close upper face 38 except for an opening of the piston 18 and an opening of the sensor nearby 18a disposed between the opening 18 and the end wall 32a.

The underlying upper face 38 is a member elliptical integral face 43 arranged in the center around the opening of the plunger 18 and extending outward from there towards opposite end walls 32a, 32b to encompass the nearby sensor opening 18a and a distant sensor opening partially defined by the cut 40 provided at the end inside of the upper face 37b of the second stage 37. A flange outer peripheral 43a of elliptical member 43 and a second flange peripheral 43c introduced there define a peripheral channel 43b among them. As shown in Figure 3, a portion of the member elliptical face 43 opposite the cutting opening 40 on face 37b of the second stage 37 is placed from the face of the stage 37.

The elastomeric member 16 is a member flexible elastomer molded, also quite configuration elliptical, which generally adapts to the member configuration elliptical face 43 on the lower side of the upper face 38 of the face member 12. The elastomeric member 16 includes a diaphragm 17 having a diaphragm portion 44 that engages in the plunger center and diaphragm portions 45, 46, which are coupled to the sensor at opposite ends of portion 44. A peripheral flange outer 47a of member 16 and a second peripheral flange 47c, which it is introduced from the flange 47a and of a much lower height define a notch 47b between them. The elastomeric member 16 in symmetry with respect to its upper and lower surfaces define similar peripheral flanges 47a and 47c with a peripheral notch similar 47b between them, on the lower side of the member elastomeric The flange 47a, the notch 47b and the flange 47c encompass the diaphragm portions 44, 45 and 46. An end tab 48 is integrally molded in the elastomeric member 16 in its distant end to ensure correct placement of the member in the housing 10 during assembly. Butterfly valves 49a and 49b are integrally molded on the lower side of the member elastomeric 16 as best seen in Figures 3b, and 4c. There is to indicate that the next detection diaphragm portion 45 is smaller than the portion of the distant detection diaphragm 46. The butterfly valve 49a is arranged in the diaphragm portion near outer detection 45 and inside the diaphragm portion of central piston coupling 44 and butterfly valve 49a is disposed within the detection diaphragm portion distant 46 to make the portion detection areas of diaphragm 45, 46 are approximately equal.

The base member 14 includes a section generally similar to a rectangular configuration box 53 that it has a bottom wall 50, the side walls 51a, 51b and the extreme walls 52a, 52b. The junction point of the walls laterals 51a, 51b and the end walls 52a, 52b define a box section 53 and are rounded to fit the configuration of the box section to the external configuration of face member 12. Box section 53 of base member 14 It is approximately 4.5 cm long and 2.0 cm wide. The walls sides 51a, 51b and end walls 52a, 52b are tall uniform (0.9 cm). The bottom wall 50 carries an elliptical member of base 54 similar in configuration to the elliptical member of face 43 on face member 12, and generally adapting to the configuration of the elastomeric member 16. The elliptical member of base 54 includes an outer peripheral flange 54a and a second peripheral flange 54c quite lower in height and introduced there to define a channel 54b between them. The structure of elliptical base member 54 generally adapts to the structure of the elliptical face member 43.

The inside of the elliptical base member 54 includes a large 22 pumping chamber. Two monitoring chambers smaller pressure; that is, a supervisory chamber of next pressure 56 and a distant pressure monitoring chamber 57, are connected to opposite ends of the pumping chamber 22 and arranged along or along the longitudinal axis of the housing 10.

Connected between the next extreme wall 52a and the pressure monitoring chamber next 56 is an inlet of the next tubular 59 pumping chamber molded into the wall bottom 50 of the base member 14. One exit of the chamber of similar distant pumping 60 is connected between the chamber of distant pressure monitoring 57 and distant end wall 52b. A housing inlet 61 is molded into the near end wall 52a of the base member 14 and connected to the input of the chamber of pumping 59. An outlet of the housing 62 is molded into the wall distant end 52b and connected to the outlet of the pumping chamber 60. Reinforcements or reinforcing walls 63 extend from each one of the end walls 52a, 52b to the fluid inlet and respective fluid outlet 61 and 62 to provide a triangular support structure at each end of the base member 14 that retains and supports the input and output 61 and 62 mounted on the base member 14. It should also be noted that the chamber of central pumping 22 and the next pressure monitoring chambers and distant 56 and 57 do not extend below the bottom of the side walls 51a, 51b of the base member 14.

They are provided distant from the member elliptical 54, between the remote pressure monitoring chamber 57 and the extreme wall 52b cradle mounts 64 mounted on the wall bottom 50 on opposite sides of the chamber outlet of pumping 60. The cradle supports 64 are generally aligned with the cradle guides 42 of the face member 12 when the base member 14 and face member 12. The switch stopper 65 is mounted on the outlet of the pumping chamber 60 distant of the cradle supports 64. The notches 71 are arranged in the side walls of the base member 14.

The mounted housing is shown in figures 5 and 6 in which the base member 14 receives the elastomeric member 16 which is then placed by the face member 12. Finally, the flow stop 24 is inserted in the opening 35 in the member of face 12 with tree 26 lowered along the cradle guides 42 for mounting the flow stop 24 on the cradle supports 64 provided on the bottom wall 50 of the base member 14.

The assembly of the housing 10 is described in detail below and can be better understood if Figures 5 and 6 are considered in conjunction with the assembled housing 10 of Figure 1

In Figures 5 and 6, the base member 14 receives the elastomeric member 16 on the elliptical base member 54 as follows. The base elliptical member 54 of the base member 14 receives the elastomeric member 16, with flange outer peripheral 54a of the elliptical member 54 engaging the notch lower 47b of elastomeric member 16, and outer flange 47a of the elastomeric member disposed outside the outer flange 54a of the elliptical base member 54. The inner peripheral flange 54c of member 54 catches inner bottom flange 47c of member elastomeric 16 within channel 54b of member 54.

With the elastomeric member 16 placed on the base member 14, face member 12 is pressed into the open box section 53 of the base member 14 to press the outer peripheral flange 43a of member 43 of face member 12 in the upper notch 47b of the elastomeric member 16. The flange inner peripheral 43c of member 43 catches the inner flange upper 47c of the elastomeric member 16 within the notch 43b of the member 43. The specific configuration of the elliptical face member 43, the elastomeric member 16, an elliptical base member 154 and its interlocked assembly allows member 16 to be retained so solid and fixed in the housing 10 in fluid tight relationship.

With the elastomeric member 16 arranged so solid between base member 14 and face member 12 in fluid tight coupling, members 12 and 14 are fixed together by conventional means, for example, by sonic welding. When the housing, 10 is mounted, the check valves or the "butterfly" valves 49a and 49b are arranged adjacent closely to the respective opposite upper edges 20a and 20b from recess 20 of base member 14.

In the housing assembly of Figure 1, the piston opening 10 of face member 12 is aligned with the recess 20 of the base member 14.

The flow stop 24 is installed in the housing 10 as follows. The body of the switch 25 is installed in the opening 35 of face member 12 with shaft 26 sliding to along the cradle guides 42, the face member 12 until the tree 26 is arranged in the cradle supports 64 provided on the bottom wall 50 of the base member 14. It should be indicated on the Figure 3 that each of the cradle guides 42 includes a retainer directed inward 42a at its lower end, so that in the installed position of the flow stop 24, the shaft 26 slides passed the catches 42a of the cradle guides 42 that are caught between the lower ends of the cradle guides 42 and the supports of the respective opposite cradle 64 of the base member 14.

In Figure 5, the flow stop 24 is rotated in clockwise to arrange the actuator of concave switch 27 below the switch actuator convex 28 in an open position of the flow stop for the housing 10 with check valves or butterfly valves 49a and 49b slightly open. The housing 10 is in the flow condition free; that is, the force of gravity on the valves of butterfly 49a, 49b provided by fluid flowing into the housing is enough to open the butterfly valves and allow the flow of fluid through the housing. It should be noted that the lower leg stop 29a of lower leg 29 of the flow stop 24 is disposed below the retainer 35b provided on an edge lower interior of the distant end wall 34b of the member of face 12 to hold the flow stop 24 in the open position of Figure 5. Additionally, the stop of the switch 65 is coupled to the concave switch actuator 27 to prevent rotation additional flow stop 24 around shaft 26.

When the flow stop 24 is turned around from shaft 26 to the coupled position of figure 6, stop 29a moves over retainer 35b to hold the flow stop in the position shown in figure 6, in which the lower end 30b of crown 30 engages in the diaphragm of the member elastomeric 16 to move the butterfly valve 49b in coupling with the edge 20b of the recess 20 to close the fluid path between housing inlet 61 and outlet of the housing 62. In the open position of Figure 5, the housing 10 could be primed out of the pump allowing fluid flow through the housing, or the housing can be primed on the Pump as described below.

Figure 7 shows a pump 69 that includes a pump housing 70 carrying a pump actuator 72 that includes a plunger 73, a nearby pressure sensor 74 and a sensor distant pressure 75. Housing 10, when installed in the housing of pump 70 is held by elastic fittings 71a that they engage the notches 71 in the side walls of the base member 14 to retain the housing in the pump 69. The housing 10 is mounted, therefore, on the pump 69, without closing the door on the housing or activating the housings. Since there is no door in the pump to protect the housing 10, it is desirable to place all active housing elements, such as the plunger opening 18 and the flow stop 24 in the pump / housing interface. When the housing 10 is installed in pump 69, an area of coupling 76 on the pump is coupled in the activator of convex switch 28 to rotate the flow stop 24 to the closed position to prevent fluid flow through the Case. The flow stop 24 is therefore operated as a member auxiliary flow control in conjunction with butterfly valves 49a, 49b when the housing 10 is loaded inside the pump 69.

The operation of the pump actuator 72 when the housing 10 is installed in the pump housing 70 is the next. Plunger 73 is engaged and compresses the portion center 44 of the diaphragm of the elastomeric member 16 during both fluid inlet as the fluid discharge parts of the cycle pumping. At the fluid inlet part of the blocking cycle, the piston 73 is at the upper end of its stroke and the sensor of distant pressure 75 is coupled at the upper end 30a of the member of crown 30 of the flow stop 24 to detect the pressure of the fluid flowing through the fluid path of the housing from the entrance of the housing 61 to the output of the housing 62. There are approximately 1,778 mm (70 thousandths (0.070 inches) of displacement between stop 29a and retainer 35b to allow the pressure sensor 75 detect the pressure inside the chamber pressure monitoring 57. When the piston 73 reaches the maximum of its pumping stroke, the fluid inlet to the chamber is completed pumping 22.

After this, the plunger descends and, under the pressure generated by the plunger in descent to compress the fluid in chamber 22, the butterfly valve 49a is closed and the butterfly valve 49b against actuator deflection of convex switch 28 to allow fluid discharge from the pumping chamber 22 through the outlet of the pumping chamber 60 and then, through the outlet in the housing 62. The movement of the crown 30 against the distant pressure sensor 75 allows the flow stop 24 detect the distant pressure on the side of discharge of fluid from the housing 10 throughout the entire cycle of pump work, from the fluid inlet portion of the cycle through the fluid discharge portion.

The objective of the present invention is Provide an easy disposable fluid pump housing manufacturing and simple that can be adapted to the drive mechanism, as it is used in more sophisticated housings. The flow stop 24 provides the housing 10 with simple means both to control the fluid flow to measure fluid pressure.

The present housing does not require extensive valve associated with the inlet and outlet of the housing as required in the prior art housings and the detection function of the air in the housing for the present housing is placed externally in the housing, such as on the lines of respective input and output of the housing. Therefore, the housing present offers a simpler, smaller, less alternative expensive and less complicated with respect to complex housings and larger prior art.

A form of preferred embodiment of the present invention, will be apparent to the technicians in the field other embodiments. The forms Realization of this type are not interpreted within the scope of the following claims, at least by their terms, the Claims are expressly stated otherwise.

Claims (33)

1. A pump housing (10) adapted to be driven by a pump actuator (72) having a plunger (73) which includes: a housing input (61), an output of housing (62) and a fluid path between them; a rigid face member (12); a rigid base member (14) that has a elongated recess (20) forming a pumping chamber (22) along of the fluid path; an elastomeric member (16) placed between the face and base members (12, 14); including face member rigid (12) a plunger opening (18) generally opposite to the pumping chamber (22) to allow the passage of the plunger (73) to control the flow of fluid through the pumping chamber (22); at least one flow control member of input and at least one output (49a, 49b) provided on the housing (10) for coupling with the rigid base member (14) to control the flow of fluid through the housing (10); Y an auxiliary flow control member (24) provided on the elastomeric member (16), characterized in that the auxiliary flow control member (24) is selectively operable in a first position and in a second position as a function of the position of the auxiliary flow control member (24), operation of the flow control member auxiliary (24) in the first position that allows fluid flow freely through the housing (10) and operation of the auxiliary flow control member (24) in the second position that drives at least one flow control member outlet (49b) to block at least the flow of fluid through the housing (10). 2. The pump housing as indicated in the claim 1, wherein at least one flow control member of inlet is mounted adjacent to the plunger opening (18) and comprises a first unidirectional check valve (49a) provided on the fluid path near the opening of the plunger (18), and where at least one flow control member of output comprises a second one-way control valve (49b) provided in the fluid path distant from the opening of the plunger (18); the housing (10) adapted to open the first one way check valve (49a) and close the second unidirectional check valve (49b) when the piston (73), in coupling with the elastomeric member (16), moves out of the rigid base member (14) for admitting fluid into the chamber pumping (22), and close the first check valve unidirectional (49a) and open the second check valve unidirectional (49b) when the plunger (73) that couples the member the elastomeric (16) moves towards the rigid base member (14) to discharge the fluid from the pumping chamber (22). 3. The pump housing as indicated in the claim 2, wherein the first and second check valves (49a, 49b) comprise molded butterfly valves (49a, 49b) integrally in the elastomeric member (16). 4. The pump housing as indicated in the claim 3, wherein the elastomeric member (16) includes a outer peripheral flange (47a) and an inner peripheral flange (47c) spaced to define a channel (47b) between them, surrounding the respective flanges and channel (47a, 47b, 47c) a portion of central diaphragm (17) of the elastomeric member (16) with the butterfly valves (49a, 49b) thus placed on the portion of central diaphragm (17) to define a plunger portion central (44) and the nearby pressure monitoring portions and respective distant (45, 46) of the central diaphragm portion (17). 5. The pump housing as indicated in the claim 4, wherein the butterfly valves (49a, 49b) are placed on the side of the elastomeric member (16) facing the rigid base member (14) for arranging the butterfly valve next (49a) inside the pumping chamber (22), and the valve distant butterfly (49b) outside the pumping chamber (22), with the near and distant pressure monitoring portions (45, 46) of the central diaphragm portion (17) thus formed to make the respective near and distant monitoring areas of the portion of central diaphragm (17) approximately equal in size. 6. The pump housing as indicated in one or more than claims 1-5, wherein the member of auxiliary flow control comprises a flow stop (24) mounted on the housing distant from the plunger opening (18), including the flow stop (24) a switching housing (25) and a shaft central (26) extending through the switch body (25) to project on its opposite sides, the central tree (26) which must be supported on the rigid base member (14) to allow oscillating movement, the switch body (25) oscillating around the central tree (26) on an axis of the housing (10) between the first position that allows the flow of fluid through the housing (10) and the second blocking position fluid flow 7. The pump housing as indicated in the claim 6, wherein the central shaft (26) of the flow stop (24) it is mounted on the cradle supports (64) arranged on the opposite sides of the housing outlet (62) provided on the rigid base member (14) of the housing (10). 8. The pump housing as indicated in the claim 7, wherein the switch body (25) comprises two attachable portions that include a switch actuator convex (28) arranged on one side of the central tree (26) and a concave switch actuator (27) arranged on one side opposite of the central shaft (26) for oscillating movement around of the central shaft (26) between the first and second positions. 9. The pump housing as indicated in the claim 8, wherein the concave switch actuator (27) includes an outer leg (29) having a retaining member (29a) provided at a lower end of the outer leg (29) for coupling with a complementary seal (35a) on a wall distant end (34b) of the rigid face member (12). 10. The pump housing as indicated in the claim 9, wherein the concave switch actuator (27) includes a crown (30) arranged at its tip, with one end (30b) of the crown (30) by coupling a monitoring part of pressure of an elastomeric member diaphragm (16) of the housing (10), and an opposite end (30b) of the crown (30) adapted to coupling a pressure sensor (74) associated with the actuator of pump (72) to monitor the fluid pressure when the housing (10) It is installed in a pump (69). 11. The pump housing as indicated in the claim 10, wherein the housing (10) includes a stop (65) underlying the flow stop (24) to engage in the body of the switch (25) to limit the movement of the flow stop (24). 12. The pump housing as indicated in the claim 1, further including monitoring means pressure to monitor fluid pressure in the housing (10) 13. The pump housing as indicated in the claim 12, wherein the pressure monitoring means include at least one opening the sensor (18a, 40) through the rigid face member (12) adapted to receive a member of pressure monitoring (74, 75) associated with the pump actuator (72). 14. The pump housing as indicated in the claim 13, wherein the pressure monitoring means include a recess (56, 57) in the rigid base member (14) opposite at least one sensor opening (18a, 40) and a portion of the elastomeric member (16) places the recess (56, 57) in the rigid base member (14) opposite at least one opening of the sensor (18a, 40) to define a pressure monitoring chamber (56, 57) of the housing (10). 15. The pump housing as indicated in the claim 14, wherein the pressure monitoring means include a distant pressure monitoring chamber (57) located along the portion of the fluid path through the housing (10) downstream of the pumping chamber (22) and a chamber next pressure monitoring (56) located along the portion of the fluid path for the housing (10) waters above the pumping chamber (22). 16. The pump housing as indicated in the claim 15, including a pumping chamber inlet (59) connected to a near end of the housing inlet (61) and in one end distant from the nearby pressure monitoring chamber (56) and an outlet of the pumping chamber (60) connected between the distant end of the distant pressure monitoring chamber (57) and the housing outlet (62). 17. The pump housing as indicated in the claim 16, wherein the auxiliary flow control member (24) set the output of the pumping chamber (60) to place the pressure monitoring member (75) in engagement with a portion of the elastomeric member (16) that places the chamber of pressure monitoring (57) to monitor fluid pressure flowing from the pumping chamber (22) to the exit of the housing (62). 18. The pump housing as indicated in the claim 17, wherein the reinforcing walls (63) are provided between the inlet and outlet of the housing (61, 62) and the rigid base member (14) to stabilize the entry and exit of the housing (61, 62) with respect to the rigid base member (14). 19. The pump housing as indicated in the claim 18, wherein the cradle supports (64) are arranged on opposite sides of the pumping chamber outlet (60) of the rigid base member (14) to support the control member auxiliary flow (24) for movement around a central shaft (26) extending through a switch body (25) to project on its opposite sides, the central tree (26) that is supported on the rigid base member (14) allows movement oscillating, the switch body (25) oscillable around the central shaft (26) on a housing shaft (10) between a open position that allows fluid flow through the housing (10) and a coupled position that blocks the flow of fluid. 20. The pump housing as indicated in the claim 19, wherein a switch stop (65) is disposed on the exit channel of the rigid base member (14) for limit the movement of the auxiliary flow control member (24). 21. The pump housing as indicated in the claim 1, wherein a generally attachable face portion elliptical (43) is underlying a nearby section of the member of rigid face (12) and includes an outer peripheral flange (43a) and a inner peripheral flange (43c) shifted inward to define a channel (43b) between them, the elastomeric member (16) comprises a member (47) of a configuration substantially elliptical having an outer peripheral flange (47a), a flange inner peripheral (47c) moved inward from there to define a peripheral channel (47b) between them on its sides opposites, and the rigid base member (14) includes a portion of generally elliptical attachable base (54) arranged inside in its next section that has an outer peripheral flange (54a) and a inner peripheral flange (54c) moved inward from there to define a channel (54b) between them, with the flanges and channels respective (43a, 43c, 43a, 54a, 54c, 54b, 47a, 47c, 47b) of the attachable face portion (43), attachable base portion (54) and the elastomeric member (16) complementary to each other in size and configuration allow fluid tight seal between them in the mounted housing (10). 22. The pump housing as indicated in the claim 21, wherein the elastomeric member (16) includes a locator tab (48) at one end thereof which serves as an aid during the assembly of the housing. 23. The pump housing as indicated in the claim 22, wherein the respective flanges and channels (47a, 47c, 47d) of the elastomeric member (16) surround a portion of central diaphragm (17) of the elastomeric member (16) that includes a coupling portion of the plunger (44) and at least a portion of pressure monitoring (45, 46). 24. The pump housing as indicated in the claim 23, wherein at least one recess (56) is provided in the rigid base member (14) adjacent to the pumping chamber (22) to define a pressure monitoring chamber (56) between the elastomeric member (16) and rigid base member (14). 25. The pump housing as indicated in the claim 24, wherein a second recess (57) is provided in the rigid base member (14) adjacent to the pumping chamber (22) to define a second pressure monitoring chamber (57) adjacent to the pumping chamber (22), to thus provide chambers of near and distant pressure monitoring (56, 57) on opposite sides of the pumping chamber (22), with the chambers of pressure monitoring (56, 57) and pumping chamber (22) arranged in the fluid path through the housing (10) 26. The pump housing as indicated in the claim 25, wherein at least one notch (71) is provided in each opposite side wall of the housing (10), being placed between yes the notches (71) and operable with the device (71a) on the pump (69) to retain the housing (10) in operative coupling with the pump (69). 27. The pump housing as indicated in the claim 26, wherein at least one notch comprises a pair of spaced notches (71) and the pump apparatus that holds the housing (10) comprises respective elastic fittings (71a) on the pump (69) by coupling the notches (71) on the housing (10). 28. The pump housing as indicated in the claim 1, wherein an open box section is provided (35) on the rigid face member (12) distant from the opening of the plunger (18). 29. The pump housing as indicated in the claim 28, wherein the box section (35) includes a first step (37) from the portion of the rigid base member (12), including the plunger opening (18), the first stage (37) adjacent to the plunger opening (10), a second is provided step (36) in an intermediate portion of the box section (35) and extending from there to a distant extreme wall (34b) of the rigid face member (12) and a cutting portion (40) is provided on an upper face (37b) of the first stage (37) of the box section (35). 30. The pump housing as indicated in the claim 29, wherein the box section (35) includes tabs interiors (39) extending from the first stage (37) to the distant end of the rigid face member (12) on the opposite inner side walls (32a, 32b) of the face member rigid (12), comprising the inner tabs (39) extensions generally parallel of an upper face (37b) of the first step (37) from the intermediate portion of the rigid face member (12) to its distant end, the tabs (39) generally parallel too but spaced upward from the portion of the rigid face member (12), including the plunger opening (18), with the respective openings provided in the inner tabs (39) generally in the second stage (36), and cradle guides (42) that descend from the opening along the side walls interiors (32a, 32b) of the open box section (35). 31. The pump housing as indicated in the claim 30, wherein each cradle guide (42) includes a stopper of cradle (42a) at their respective lower ends. 32. The pump housing as defined in the claim 31, wherein the auxiliary flow control comprises a flow stop (24) that is inserted in the open section of the housing (10) with a shaft (26) of the flow stop (24) descending along the crib guides (42) and past the crib stops (42a) that are oscillatingly mounted on the base member rigid (14) housing (10), a pressure monitoring sensor (30, 30b) of the flow stop (24) disposed in the cutting portion (40) of the first stage (37) of the rigid face member (12). 33. The pump housing as indicated in the claim 1, wherein the elastomeric member (16) includes a diaphragm portion (17) placed through the opening of the plunger (18).